Rename feature tls -> _tls

Cargo.toml

@@ -23,13 +23,15 @@ features = ["rustls", "native-roots", "native-tls", "socks-proxy", "cookies"]
 
 [features]
 default = ["rustls", "native-roots", "native-tls", "socks-proxy", "cookies"]
-rustls = ["dep:rustls", "tls"]
-native-tls = ["dep:native-tls", "dep:der", "tls"]
-tls = ["dep:rustls-pemfile", "dep:rustls-pki-types"]
+rustls = ["dep:rustls", "_tls"]
+native-tls = ["dep:native-tls", "dep:der", "_tls"]
 native-roots = ["dep:rustls-native-certs"]
 socks-proxy = ["dep:socks"]
 cookies = ["dep:cookie_store", "_url"]
+
+# Underscore prefixed features are internal
 _url = ["dep:url"]
+_tls = ["dep:rustls-pemfile", "dep:rustls-pki-types"]
 
 [dependencies]
 base64 = "0.22.1"

src/agent.rs

@@ -16,7 +16,7 @@ use crate::unit::{Event, Input, Unit};
 use crate::util::UriExt;
 use crate::{Error, RequestBuilder, SendBody};
 
-#[cfg(feature = "tls")]
+#[cfg(feature = "_tls")]
 use crate::tls::TlsConfig;
 
 #[derive(Debug, Clone)]
@@ -135,7 +135,7 @@ pub struct AgentConfig {
     /// Config for TLS.
     ///
     /// This config is generic for all TLS connectors.
-    #[cfg(feature = "tls")]
+    #[cfg(feature = "_tls")]
     pub tls_config: TlsConfig,
 }
 
@@ -162,7 +162,7 @@ impl Default for AgentConfig {
             max_idle_connections_per_host: 3,
             max_idle_age: Duration::from_secs(15),
 
-            #[cfg(feature = "tls")]
+            #[cfg(feature = "_tls")]
             tls_config: TlsConfig::with_native_roots(),
         }
     }

src/lib.rs

@@ -30,7 +30,7 @@ mod util;
 pub mod resolver;
 pub mod transport;
 
-#[cfg(feature = "tls")]
+#[cfg(feature = "_tls")]
 pub mod tls;
 
 #[cfg(feature = "cookies")]